First of all, collect the plants and leaves that you like. Make sure you do this in the afternoon, as they are dry and free of dew at that time. One of the best and most common flowers for this purpose are daisies, as they are relatively easy to press.
Blow off any dirt and flatten them
The next thing you need to do is to blow off any dirt on the flower or leaves. This can be done by removing any dirt or insects in the flowers or on the leaves. Make sure you do not wash the flowers and leaves as they will take a lot of time to dry off.
Find a large book to press the flowers and leaves
You need to find a large book so that the flowers and leaves can be pressed between it. Make sure the book you find has ample weight for the flowers to be pressed.
Place the flowers in the middle of the book
Spread the pages of the book, place a tissue paper in the centre so that the flowers and leaves do not leave any stains on the pages, and place the flower/leaf on top of it. After that, close the book and place some more weight on top of the book.
Retrieve the flowers and leaves
After some time, retrieve the flowers and leaves from the centre and place them on a piece of acid free paper for some time.
Use them for decorating
You can use these flowers and leaves for decoration purposes on diaries or gifts. Make sure you secure them in a safe place so they remain fresh.